Hay-elevator



(No Model.)

0. E. HUNT. N. B. HELM & H. L. FERRIS. HAY ELEVATOR.

Patented Oct. 26, 1886.

Kai 1.9 fif W All?! a g UNITED STATES PATENT OFFICE.-

CHARLES E. HUNT, NATHAN B. HELM, AND HENRY L. FERRIS, OF HARVARD, ILLINOIS.

HAY-ELEVATO R.

SPECIFICATION forming part of Letters Patent No. 351,442, dated October 26, 1886.

(No model.)

To all whom it may concern:

Be it known that we, CHARLES E. HUNT, NATHAN B. HELM, and HENRY L. FERRIS, residents of Harvard, in the county of Mo- Henry and State of Illinois, have invented certain new and useful Improvements in Hay- Elevators; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

Our invention relates to improvements in hay-elevators, and especially in elevators of the reversible class, its object being to secure perfect reversibility without the use of the swiveled base, which constitutes a feature of nearly all reversible elevators.

The invention itself and the various means for which it is carried into effect are fully de scribed and explained in the following specification, and shown in the accompanying drawings, in which Figure 1 is an internal elevation of one-half of our elevator, showing locking mechanism in engagement with a track-stop, A; Fig. 2, a similar view showing locking mechanism re leased from track-stop and in engagement with fork-pulley frame; Fig. 3, an end elevation of the elevator without locking mechanism, the View being in the direction indicated by the arrowsin Figs. 1, 2 5 Fig. 4, a side elevation of the elevator, looking in the direction indicated by arrow in Fig. 3; Fig. 5, a horizontal section through the line :0 m, Fig. 4; Figs. 6 and 7, elevations showing modified forms of the device for hinging the caster-pulley D to the elevator-frame.

In these views, A is the ordinary elevatortrack. A is a stop fastened to the lower face of the track, for the purpose of holding the elevator stationary when desired. B is onehalf of a twopart elevator-frame, and G O are rollers pivoted to the frame and resting on the track. A fork-pulley, H, is suspended under the center of the frame by means of a rope, G, fastened to the elevator in the manner hereinafter set forth, and on the pulley H is hung a frame or housing, I, provided with an upward-projecting headed pin, P.

elevator shown and described in our Patent No. 316,463; hence no further explanation of them is thought necessary here.

In nearly all the hay-elevators patented or in use the fork-pulley (corresponding to the pulley H in these drawings) hangs in a loop in the main rope, the loop being formed by fastening the end of the rope to the elevatorframe, carrying the rope thence downward and under the fork-pulley, and thence upward and over a pulley attached to the frame, (from which latter pulley the rope passes to and over a pulley at or near the end of the elevatortrack.) In every construction of the class prior to the one shown herein the end of the rope has been fastened at or near one end of the carrier, and the pulley, forming the support of the rope, has been fastened at or near the op posite end of the carrier, so that the loop supporting the fork-pulley has hung lengthwise of the carrier that is, in a plane parallel to So the plane of the track.

In elevators constructed in the manner referred to the direction of the rope has been reversed in different ways, but most commonly by providing the elevator with a swiveled base, 8 5

to which are fastened the end of the rope and the rope-supporting pulley, the effect of the rotation of the swiveled base being to reverse the entire pulley-supporting loop.

In the elevator shown herein we have secured reversibility in a different but equally effective way, and one which is cheaper and simpler of construction than that mentioned above. The end of the main rope G is fastmounted in a frame, E, which is connected with the elevator-frame by a hinge-joint, E, at a point directly opposite the point of attachment of the end of the rope. From the caster-pulley D the rope passes in a line parallel to the track to a suitable pulley at the end of the track; but the pulley supporting loop and the fork-pulley itself hang in a plane at right angles to the plane of the track. The

fork-pulley H has a diameter preferably just track without the intervention of any pulley,

except the caster-pulley D. It is evident that with this construction the direction of the rope may be reversed by swinging the caster-pulley about its hinge E from the position shown in full lines to that shown in dotted lines in Fig. 4, and that the change of position of the pulley will change the position of the horizontal portionof the rope G, but not that of the loop or the pulley H, the loop and pulley remaining constantly in a plane at right angles to the plane of the beam or track.

As shown in Fig. 4c, the part of the rope that hangs from the pulley is slightly off the center, so that the swinging of the pulley-frame E would change slightly the position of the pulley H and the pin P. This variation is not sufficient to interfere with the working of the locking mechanism; but slight as it'is it may be easily prevented. The frame and its hinge may be constructed as shown in Fig. 6, the hinge being above the pulley and the groove in the pulley being directly on the center; or the frame E may work on two pivotal points, E, on the elevator-frame, thelower of said pivots being hollow, so that the rope can pass through it, and the grooved edge of the pulley being in the axis of the hinge and between the two points of connection of the frame E with the elevator-frame.

The details of constructionof the pulleyframe E and the manner in which it is hinged to the elevator-frame are not essential, since any mechanic can vary these in many ways without altering the principle of operation of our elevator as a whole. We do not, therefore, confine our invention to the use of any of the forms of the caster-pulley shown in the drawings; neither do we limit our invention (so far as it consists in hanging the pulley-supporting loop at right angles or approximately at right angles to the track) to the use of that feature, in combination with a caster-pulley, since it is evident that the caster-pulley might be made stationary, and the device would still be operative, though not reversible; neither do We limit the combination of the transversely-hung loop and the supporting-pulley normally parallel to the track to their use in combination with a forkpulley of such diameter as to make the sides of the loop vertical, since the size of the forkpulley may be varied within certain limits without materially impairing the operation of the machine. 7

Having now described and explained our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. The combination, with an elevator-frame adapted to move along a suitable track and mechanism attached to the frame and adapted to lock it to the track, of a pulley attached to the side of the elevator frame and normally parallel to the line of motion of the elevator, a rope passing over said pulley and having its end fastened to the elevator-frame at a point opposite the pulley, a fork -pulley hung on said rope between the end of the rope and the rope-supporting pulley, and a housing supported by the fork-pulley and provided with means for operating said locking mechanism, said fork-pulley and the part said pulley and having its end fastened to frame, and an operating-rope passing over said elevator -frame at a point opposite the hinge which connects the pulley-frame and the elevator-frame, the part of the rope be tween its end and the supporting-pulley being approximately at right angles to the line of motion of the elevator.

3. The combination, with an elevator-frame adapted to move along a suitable track, of a pulley-frame hinged to the side of the elevator-frarne, a pulleymounted in said frame, an operating-rope passing over said pulley and having its end fastened to the elevator-. frame at a point opposite said hinge, and a fork-pulley hung on the rope between its end and said rope-supporting pulley, said pulley and the loop of rope supporting it being transverse'to the line of motion of the carrier, and the diameter of the fork pulley being; such that the sides of the loop are approximately parallel.

4. The combination,with the elevator-frame B, of the pulley-frame E, hinged to one side B, of the pulley-frame E, and the pulley D, specification in the presence of two subscribing 10 mounted in the pulley-frame, the frames B E witnesses. being connected by two knuckle-joints, one

above and one below the pulley, and the 5 lower of said knuck1e-j oints being hollow for HENRY L FERRIS the passage of a rope resting on the pulley D, substantially as and for the purpose set I Witnesses:

forth. N. E, BLAKE,

In testimony whereof we have signed this 1 P. E. SAUNDERS. 

